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Let S = {1,2,3, …, 12}. How many functions f: S → S are there such that f(f(x)) = x and f(x) - x is divisible by 3? |
Answer» ONG>Step-by-step EXPLANATION:yfyffgdyzidkzlxlxhzgxhci I uchddjudnrdhhcujfjjf YF |
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